| 25201 | Ridgeline Resources, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 25202 | Ridgemar Energy Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jan 2025 |
| 25203 | Ridgeview Gas & Oil Inc | Templeton, PA 16259-4505 | Oil & Gas Operator | Dec 2024 |
| 25204 | Ridgeview Gas Co | Templeton, PA 16259-4505 | Oil & Gas Operator | Dec 2010 |
| 25205 | Ridgeway Arizona Oil Corp. | Houston, TX 77079 | Oil & Gas Operator | Jan 2025 |
| 25206 | Ridgeway Exco, Inc. | San Antonio, TX 78279 | Oil & Gas Operator | Mar 1996 |
| 25207 | Ridgeway Resources | Barberton, OH 44203 | Oil & Gas Operator | Dec 2012 |
| 25208 | Ridglea Energy I, LLC | Spring, TX 77379 | Oil & Gas Operator | Apr 2025 |
| 25209 | Ridgway Realty & Land Inc | Pepper Pike, OH 44122 | Oil & Gas Operator | Dec 2019 |
| 25210 | Ridley Oil Corporation | Tyler, TX 75702 | Oil & Gas Operator | Nov 1996 |
| 25211 | Rieke, Leo Ernest | Lenexa, KS 66219 | Oil & Gas Operator | Aug 1986 |
| 25212 | Rierson Energy, LLC | McPherson, KS 67460 | Oil & Gas Operator | Dec 2024 |
| 25213 | Rierson, Joe | McPherson, KS 67460 | Oil Operator | Dec 2024 |
| 25214 | Rietz John T & Co Inc | | Oil & Gas Operator | Mar 1992 |
| 25215 | Rif Raf Inc | Norman, OK 73069 | Oil Operator | May 1999 |
| 25216 | Rife Energy Operating, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2025 |
| 25217 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2025 |
| 25218 | Rife Operating, LTD. | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2005 |
| 25219 | Rife, Bud Dba B & S Gas & Oil Co | Harold, KY 41635 | Oil & Gas Operator | Dec 2023 |
| 25220 | Rife, M. O., Jr. | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 1998 |
| 25221 | Rig 6 Drilling Co., Inc. | Bronson, KS 66716 | Oil Operator | Oct 2019 |
| 25222 | Rig II LLC | Woods Cross, UT 84087 | Oil & Gas Operator | May 2018 |
| 25223 | Rig Iron Petroleum Inc | | Oil & Gas Operator | Aug 1988 |
| 25224 | Rig Iron, Inc. | | Oil & Gas Operator | Mar 1991 |
| 25225 | Rig Petroleum, LLC | Spearman, TX 79081 | Oil & Gas Operator | Apr 2025 |
| 25226 | Rig Runner Express Inc Of Texas | Kilgore, TX 75663 | Oil & Gas Operator | May 2014 |
| 25227 | Rig Runner Express, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Mar 2008 |
| 25228 | Rigel Resources Co., Inc. | | Oil Operator | Aug 2009 |
| 25229 | Rigel, Inc. | | Oil & Gas Operator | Feb 2010 |
| 25230 | Rigged Up, LLC | Graham, TX 76450 | Oil Operator | Apr 2025 |
| 25231 | Riggins Energy Inc. | Vernon, TX 76385 | Oil & Gas Operator | Jul 2004 |
| 25232 | Riggs Petroleum Company | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 25233 | Riggs, Don R. | San Antonio, TX 78270 | Oil & Gas Operator | Aug 2003 |
| 25234 | Riley & Scott Gas Co | Pikeville, KY 41502 | Gas Operator | Dec 2021 |
| 25235 | Riley Deborah R | Nowata, OK 74048 | Oil Operator | Dec 2024 |
| 25236 | Riley Exploration Operating Co LLC | Blanchard, OK 73010-8024 | Gas Operator | Jun 2017 |
| 25237 | Riley Exploration Opg Co, LLC | La Grange, TX 78945 | Oil & Gas Operator | Apr 2025 |
| 25238 | Riley Exploration, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Apr 2025 |
| 25239 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 25240 | Riley Leo M Co | | Gas Operator | Oct 1998 |
| 25241 | Riley Permian Operating Co, LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Apr 2025 |
| 25242 | Riley Production | Throckmorton, TX 76483 | Oil & Gas Operator | Apr 2025 |
| 25243 | Riley Production, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2012 |
| 25244 | Riley Resources, Inc . | Oklahoma City, OK 73162 | Gas Operator | Dec 2024 |
| 25245 | Rim Oil Company | Hays, KS 67601 | Oil Operator | Jun 2001 |
| 25246 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Apr 2025 |
| 25247 | Rim Southwest Corp | Farmington, NM 87499-2058 | Oil & Gas Operator | Feb 2025 |
| 25248 | Rimco Oil & Gas | | Oil Operator | Mar 1987 |
| 25249 | Rimco Production Company, Inc. | | Oil & Gas Operator | Jan 2004 |
| 25250 | Rimfire Resources, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 25251 | Rimfire Swabbing, Inc. | | Oil Operator | Jan 2025 |
| 25252 | Rimrock Colony | Sunburst, MT 59482 | Gas Operator | Dec 2024 |
| 25253 | Rimrock Energy, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Oct 2012 |
| 25254 | Rimrock Gas Company | Weatherford, OK 73096 | Oil & Gas Operator | May 2008 |
| 25255 | Rimrock Oil Company | Kalispell, MT 59901 | Oil & Gas Operator | Dec 2023 |
| 25256 | Rimrock Production Inc. | Giddings, TX 78942 | Oil & Gas Operator | Apr 2025 |
| 25257 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Jan 2025 |
| 25258 | Rinard Petroleum LLC | Newport, OH 45768 | Oil & Gas Operator | Dec 2022 |
| 25259 | Rincon Island Limited Partnership | | Oil & Gas Operator | Nov 2022 |
| 25260 | Rincon Oil & Gas LLC | Arvada, CO 80005 | Gas Operator | Jun 2022 |
| 25261 | Rincon Oil Co. | | Oil & Gas Operator | Dec 1990 |
| 25262 | Rincon Petroleum Corporation | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Apr 2025 |
| 25263 | Rincon Production Co., Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Apr 1997 |
| 25264 | Rine Drilling Co | | Oil & Gas Operator | Mar 1994 |
| 25265 | Rine Drillingand Exploration, Inc. | Wichita, KS 67202 | Gas Operator | Dec 2009 |
| 25266 | Rine Exploration | | Oil & Gas Operator | Jul 1994 |
| 25267 | Rine Exploration Co. | | Oil Operator | Jul 1988 |
| 25268 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 25269 | Ringer Oil Co Inc | | Oil & Gas Operator | Aug 1989 |
| 25270 | Ringneck Resources, LLC | Tulsa, OK 74135 | Gas Operator | Dec 2024 |
| 25271 | Ringo Rig LLC | Coleman, TX 76834 | Oil & Gas Operator | Apr 2025 |
| 25272 | Ringwood Gathering Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2025 |
| 25273 | Rio Blanco Energy, Inc. | Littleton, CO 80121 | Oil & Gas Operator | Oct 2002 |
| 25274 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Jan 2025 |
| 25275 | Rio Bravo Expl. & Prod. Co. | Houston, TX 77055 | Oil & Gas Operator | Apr 2020 |
| 25276 | Rio Bravo Oil Company | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2002 |
| 25277 | Rio Bravo Poso | | Oil & Gas Operator | Dec 2009 |
| 25278 | Rio Bravo Production, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2025 |
| 25279 | Rio Bravo Royalty Co. | Bandera, TX 78003 | Oil & Gas Operator | Aug 2003 |
| 25280 | Rio Chama Petroleum, Inc | Pagosa Springs, CO 81147 | Oil & Gas Operator | Apr 2004 |
| 25281 | Rio Energy | Houston, TX 77067 | Oil Operator | Apr 2025 |
| 25282 | Rio Exploration Company | San Antonio, TX 78209 | Gas Operator | Dec 2005 |
| 25283 | Rio Grand Exploration, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Apr 2025 |
| 25284 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 25285 | Rio Grande E&P II, LLC | Houston, TX 77092 | Gas Operator | Apr 2025 |
| 25286 | Rio Grande E&P, LLC | Houston, TX 77024 | Gas Operator | May 2022 |
| 25287 | Rio Grande Energy | Laredo, TX 78041 | Oil & Gas Operator | May 2004 |
| 25288 | Rio Interstate Oil, Inc. | Oklahoma City, OK 73189 | Oil & Gas Operator | Sep 1994 |
| 25289 | Rio Mesa Resources Inc | | Oil & Gas Operator | Jul 2022 |
| 25290 | Rio O & P LLC | Pasadena, TX 77504 | Oil Operator | Apr 2025 |
| 25291 | Rio Oil And Gas (Permian) II,LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Nov 2024 |
| 25292 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Apr 2025 |
| 25293 | Rio Rocky Enterprises, Inc. | Eldorado, TX 76936 | Oil & Gas Operator | Apr 2025 |
| 25294 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | Jan 2025 |
| 25295 | Rio-Tex, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 25296 | Ripco | | Oil & Gas Operator | Jul 1986 |
| 25297 | Rippy Branch Oil Co. | Grandfalls, TX 79742 | Oil & Gas Operator | Apr 2022 |
| 25298 | Rippy Oil Company | Tyler, TX 75702 | Oil & Gas Operator | Apr 2025 |
| 25299 | Riptide Energy LLC | Austin, TX 78701 | Oil & Gas Operator | Apr 2025 |
| 25300 | Risco La Sara Operations, LLC | Houston, TX 77056 | Oil & Gas Operator | Aug 2014 |